JP2011020202A - Cutting plotter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting plotter that, even if warpage occurs in a guide rail or the like that movably supports a carriage, can prevent loss of cutting quality due to the warpage. <P>SOLUTION: The cutting plotter includes: a work table that supports a sheet-shaped medium that is being worked; an end mill that is provided above the medium supported by the work table and that cuts the medium; guide rails 31, a Y-bar 32, and a cutting drive mechanism that are provided above the work table and that support the end mill such that the end mill can move forward and backward, right and left, and up and down; and a control unit 50 that moves the end mill forward and backward, right and left, and up and down, and controls the end mill so as to cut the medium that is being worked. The cutting plotter also includes a carriage shape measurement mechanism 100 that detects warpage in the guide rails 31 and the Y-bar 32. Correction of the moving direction of a work tool is controlled on the basis of the detected warpage of the guide rails 31 and Y-bar 32. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a processing table having a support surface for supporting a sheet-like processing medium, a first guide rail provided on the processing table, and a second guide rail supported so as to be movable along the first guide rail. And a processing tool support means comprising a carriage supported so as to be movable along the second guide rail, and a processing tool such as an end mill that is attached to the carriage and cuts the processing medium into a desired shape. It relates to a cutting plotter.

  There are a printer device, a cutting plotter, and the like as a medium processing device that performs a desired processing on a sheet-like processing medium. These medium processing apparatuses place and hold a medium to be processed on a flat processing table, and a first guide rail provided so as to extend linearly above the processing table, and a direction in which the first guide rail extends. A second guide rail (also referred to as a Y bar) provided so as to extend in a direction intersecting with the first guide rail and movably supported along the first guide rail, and supported movably along the second guide rail A processing tool support means configured by a carriage, a processing tool attached to the processing tool support means for processing a workpiece medium, and a control for controlling the processing by controlling movement of the processing tool support means and the processing tool. A device including a mechanism is well known (for example, see Patent Document 1).

  A cutting plotter is a kind of medium processing apparatus as described above, and is an apparatus for cutting a medium to be processed into a desired shape. Also in the cutting plotter, the thing of the above structures is known. In such a cutting plotter, a cutter blade, an end mill, or the like is used as a processing tool, and the processing tool is moved up and down with respect to the carriage under the control of a control mechanism and pressed against or separated from the processing medium. By performing movement control on the two guide rails and movement control on the first guide rail of the second guide rail, it becomes possible to move the processing tool up and down, front and rear, left and right with respect to the workpiece medium, The workpiece medium can be cut into a desired shape.

JP 2004-148745 A

  By the way, in the cutting plotter as described above, a minute bend due to tolerance or the like may exist in the first guide rail or the second guide rail. For example, some second guide rails have a length of about 1 m and have a curvature of about 0.9 mm. When cutting is performed using the first or second guide rail having such a bend, the carriage cannot be moved straight along the guide rail, and the processing medium cannot be cut into a desired shape. There was a problem that a problem occurred and the quality of cutting of the workpiece medium deteriorated.

  The present invention has been made in view of the above problems, and provides a cutting plotter that can prevent deterioration in cutting quality due to the bending even if the guide rail or the like that supports the carriage to be movable is bent. For the purpose.

  In order to achieve the above object, a cutting plotter according to the present invention includes a medium supporting means (for example, the processing table 20 in the embodiment) having a supporting surface for supporting a sheet-like workpiece medium, and a medium supporting means on the supporting surface. A first guide rail (for example, guide rail 31 in the embodiment) provided extending in a first direction parallel to the first guide rail, and attached to be movable in the first direction along the first guide rail. And a second guide rail (for example, the Y bar 32 in the embodiment) provided to extend in a second direction that is parallel to and intersects the first direction, and is attached to be movable in the second direction along the second guide rail. A carriage (for example, the slider 41 in the embodiment), and a carriage that is movably attached in a third direction perpendicular to the support surface. A processing tool (for example, the end mill 43 in the embodiment), a control for moving the second guide rail in the first direction along the first guide rail, and a carriage in the second direction along the second guide rail. And control for moving the processing tool in the third direction with respect to the carriage, and a processing control means (for example, the control unit 50 in the embodiment) for cutting the medium to be processed by the processing tool. In the cutting plotter, when the carriage is moved in the second direction along the second guide rail, the movement path of the carriage relative to the second guide rail is shifted in a direction perpendicular to the second direction with respect to the intended movement path. Second direction deviation detecting means for measuring the second guide rail deviation amount indicating the size of the first guide rail (for example, the displacement sensor 1 in the embodiment). 1 and an X-direction jig 103), and the machining control means includes a second guide rail on the first guide rail so as to correct the shift amount of the second guide rail in the movement control of the carriage on the second guide rail. It is characterized in that control is added to the above movement control.

  Further, in the cutting plotter according to the present invention, when the second guide rail is moved in the first direction along the first guide rail, the movement path of the second guide rail with respect to the first guide rail becomes an intended movement path. In contrast, first direction deviation detecting means (for example, the displacement sensor 101 and the Y direction jig 104 in the embodiment) that measures the first guide rail deviation amount indicating the magnitude of deviation in the direction orthogonal to the first direction is provided. The machining control means performs control including carriage movement control on the second guide rail so as to correct the shift amount of the first guide rail in the movement control of the second guide rail on the first guide rail. Is preferred.

  The first and second guide rails are provided so as to extend on a straight line, the first direction deviation detecting means measures the bending of the first guide rail, and the second direction deviation detecting means is provided on the second guide rail. It is preferable to measure the bending.

  In the cutting plotter according to the present invention, the second direction deviation detection for detecting a deviation in the direction orthogonal to the second direction with respect to the intended movement path from the movement path when the carriage is moved along the second guide rail. Means are provided for performing control to move the second guide rail in the first direction with respect to the first guide rail so as to correct the deviation. Accordingly, the bending of the second guide rail supporting the carriage is measured before cutting, and the movement of the second guide rail in the first direction relative to the first guide rail is controlled based on the measurement result. Since the movement of the tool relative to the workpiece medium can be corrected, even when the second guide rail that supports the carriage has a bend or the like, it is possible to prevent the quality of the cutting process from being deteriorated due to the bend.

  Further, there is provided a deviation detecting means for detecting a deviation in a direction perpendicular to the first direction with respect to an intended movement path from a movement path when the second guide rail is moved along the first guide rail. Control is performed to move the carriage in the second direction along the second guide rail so as to correct the deviation in the direction orthogonal to the one direction. As a result, even when there is a bend in the first guide rail that supports the second guide rail, it is possible to prevent the quality deterioration of the cutting due to the bend.

It is a perspective view which shows the cutting plotter to which this invention is applied. It is a fragmentary sectional view when it cut | disconnects in the direction extended in the longitudinal direction of the end mill provided in the said cutting plotter, and is a figure which shows a mode that the to-be-processed medium is cut with the end mill. It is a block diagram which shows the cutting process control structure by the said cutting plotter. It is a perspective view which shows a mode that the X and Y direction jig | tool and the displacement sensor were attached to the said cutting plotter. (A) is a perspective view which shows a displacement sensor. (B) is a perspective view which shows a mode that a displacement sensor is attached to a sensor support member, and a sensor support member is attached on a slider. It is a perspective view which shows a mode that the curvature of the X-axis direction of a Y bar is measured using the X direction jig | tool in the said cutting plotter. (A) is the top view which showed a mode that the bending of Y bar | burr bent in the X-axis direction was measured using a displacement sensor. (B) is a figure which shows the measurement data produced based on the measurement result of the bending of the Y bar measured by the displacement sensor, and the measurement result. (C) is a figure which shows the cutting data for cutting into a desired process area | region and the shape of the process area. It is a top view which shows a mode that the X and Y direction jig | tool and the displacement sensor are attached to the said cutting plotter. (A) is the top view which showed a mode that the curve of the guide rail bent in the Y-axis direction was measured using a displacement sensor. (B) is a figure which shows the measurement result of the bending of the guide rail measured by the said displacement sensor, and the cutting data produced based on the measurement result. (C) is a figure which shows the cutting data for cutting into a desired process area | region and the shape of the process area.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. As an example of a cutting plotter (cutting device) to which the present invention is applied, a sheet-like processing medium formed of a material such as an acrylic plate or an aluminum composite plate is fixedly held on a processing table, and an end mill is attached to the processing medium. FIG. 1 shows a schematic configuration of an XY plotter type cutting plotter 1 that lifts up and down in the vertical direction and moves the workpiece medium in a desired shape by moving it in two orthogonal directions in a horizontal plane. . In the following description, the upward direction on the paper surface of FIG. 1 is the positive Z-axis direction, the lower right direction (the direction parallel to the Y bar 32 described later) on the paper surface of FIG. A lower left direction (a direction parallel to a guide rail 31 described later) is defined as a positive X-axis direction.

  The cutting plotter 1 includes a processing table 20 that holds the processing medium 2 fixedly, a main body frame 10 that holds the processing table 20 horizontally and serves as a mounting base for each mechanism, and an X-axis direction (front and rear) above the processing table 20. X-axis carriage 30 that is movably supported in a direction) and is movable in the X-axis direction by an X-axis drive mechanism 35 described later, and is supported movably in the Y-axis direction (left-right direction) along a Y-bar 32 described later. A cutting unit 40 that can be moved in the Y-axis direction by a Y-axis drive mechanism 45, which will be described later, and a horizontal movement of the X-axis carriage 30 and a vertical movement of an end mill 43, which will be described later, are controlled. The control unit 50 is configured to control cutting of the workpiece medium 2.

  The processing table 20 includes a support plate 21 having a flat surface, a decompression chamber 22 provided on the lower surface side of the support plate 21, and a vacuum blower capable of setting the decompression chamber 22 to a negative pressure by exhausting air from the decompression chamber 22. 23, a rectangular vacuum table 24 which is provided at the center portion when viewed from above the processing table 20 and on which the sheet-like processing medium 2 can be placed and fixedly held, and covers the upper surface of the vacuum table 24 Thus, it is configured by two felts 25 having a thickness of about 3 mm for supporting the processing medium 2 (see FIGS. 1 and 2).

  As shown in FIG. 1, mounting portions 21 a and 21 b for mounting legs of an X-direction jig 103 and a Y-direction jig 104 to be described later are provided on the upper surface of the support board 21. The vacuum table 24 has a number of fine air holes (not shown) penetrating vertically. The air holes and the decompression chamber 22 are provided on the lower surface side of the vacuum table 24, and the upper surface of the vacuum table 24 is By adopting a configuration covered with two sheet-like felts 25, it is possible to allow air to pass through the air holes and the felts 25 in the vertical direction. Therefore, by setting the decompression chamber 22 to a negative pressure by the vacuum blower 23, the workpiece medium 2 can be vacuum-sucked and held on the vacuum table 24.

  The X-axis carriage 30 has a pair of left and right guide rails 31 and 31 provided on the upper surface of the support plate 21 so as to extend in parallel with the X-axis direction, and an X-axis carriage provided on the guide rails 31 and 31 so as to extend in the Y-axis direction. Y bar 32 held movably in the direction, slide blocks 33 and 34 fitted to guide rails 31 and 31, respectively, for fixing the left end and right end of Y bar 32, and Y bar 32 It is comprised by the X-axis drive mechanism 35 moved to an axial direction. As the guide rail 31, a support rail of a linear motion bearing, which is also referred to as a linear motion guide or a linear guide, is used. The Y bar 32 is formed using an aluminum material so as to extend in a rod shape, and is supported so as to be slidable in the X-axis direction while straddling the upper side of the support board 21. The X-axis drive mechanism 35 includes a ball screw (not shown) disposed on the lower surface side of the processing table 20 so as to extend back and forth in parallel with the guide rail 31, a servo motor (not shown) that rotationally drives the ball screw, It consists of a ball nut fitted and supported by a ball screw and fixed to the X-axis carriage 30, and the Y bar 32 and slide blocks 33 and 34 can be moved in the X-axis direction by rotating the servo motor. It has become.

  As shown in FIGS. 1, 2, and 4, the cutting unit 40 is fitted to a Y-axis guide rail 32a fixed to the front surface of the Y bar 32 so as to extend in the Y-axis direction, and is slidable to the left and right. A supported slider 41, a rotary drive unit 42 that is detachably supported on the front side of the slider 41, and that rotates an end mill 43, which will be described later, around an axis extending in the longitudinal direction thereof, and a removable unit at the lower part of the rotary drive unit 42 The end mill 43 configured to cut the workpiece medium 2, the Y-axis drive mechanism 45 capable of moving the slider 41 in the Y-axis direction, and the rotation drive unit 42 rotate the end mill 43, and the end mill 43 is rotated to the rotation drive unit. The cutting drive mechanism 46 is configured to be movable in the vertical direction with respect to 42. The slider 41 has an engagement hole 41 a on the upper surface thereof, and a carriage shape measuring mechanism 100 (detailed later) is attached to the slider 41 by fitting a protrusion of a sensor support member 102 to be described later into the engagement hole 41 a. It is possible. Further, the end mill 43 can be moved up and down with respect to the rotation drive unit 42, and the end mill 43 obtained by rotating and rotating the end mill 43 using the rotation drive unit 42 is rotated by the cutting drive mechanism 46. It is possible to cut the workpiece medium 2 by pressing and moving it 2. In addition, not only the end mill 43 but also a cutter blade or the like can be attached to and detached from the rotation drive unit 42.

  The Y-axis drive mechanism 45 includes a drive pulley (not shown) and a driven pulley (not shown) rotatably provided on the left end side and the right end side of the Y bar 32, and a servo motor (rotatingly driving the drive pulley). (Not shown) and an endless belt-like drive belt (not shown) wound around the drive pulley and the driven pulley, and the slider 41 is fixed to the intermediate portion of the drive belt. A timing belt having a large number of teeth formed on the inner peripheral surface of the drive belt, and a timing pulley is used for the drive pulley and the driven pulley to move the cutting unit 40 (moving direction, moving speed, left-right position, etc.). It can be finely controlled.

  As shown in FIG. 3, the control unit 50 includes a cutting shape data reading unit 52, a cutting shape setting unit 53, a drive control unit 54, an input unit 55, a display unit 56, and the like. The cutting shape data reading unit 52 is configured to read a predetermined machining program and a desired machining shape (hereinafter referred to as machining shape data) input by the user, and transmit the machining shape data to the cutting shape setting unit 53. The The cutting shape setting unit 53 refers to the machining shape data received from the cutting shape data reading unit 52 to create cutting data (shape data) used when cutting the workpiece medium 2 and uses the created cutting data. It transmits to the drive control part 54. The drive control unit 54 can control the entire apparatus including each axis driving mechanism of the cutting plotter 1, and based on the cutting data received from the cutting shape setting unit 53, the above-described X-axis driving mechanism 35, Y The horizontal movement of the X-axis carriage 30 and the cutting unit 40 and the vertical movement of the end mill 43 are controlled by controlling the operations of the shaft drive mechanism 45, the cutting drive mechanism 46, and the like. The workpiece medium 2 can be cut.

  The input unit 55 is a touch panel provided for a user to input an instruction for operating the cutting plotter 1, and the user can input a cutting procedure instruction (for example, clockwise or counterclockwise) via the input unit 55. Instructing to perform cutting, cutting speed, and cutting conditions such as the pressing force of the end mill against the work medium) and reciprocating the slider 41 in the Y-axis direction and the Y bar 32 in the X-axis direction. Thus, the shape of the guide rail 31 and the Y bar 32 can be measured (detailed later). The display unit 59 is used as a display that displays the cutting conditions, the cutting shape, and the operation result of the cutting plotter 1.

  By the way, although the guide rail 31 and the Y bar 32 described above are formed in a bar shape extending straight, a fine bend (straightness tolerance) may occur in the manufacturing stage. For example, some Y bars 32 have a length of about 1 m and have a curvature of about 0.9 mm. When cutting is performed using the guide rail 31 and the Y bar 32 having such a bend, the cutting unit 40 cannot be moved straight in the X direction and the Y direction, and cutting is performed in the shape of the machining shape data. There arises a problem that the quality of the cutting process is deteriorated such that it cannot be performed.

  Therefore, in the cutting plotter 1 according to the present embodiment, as shown in FIG. 3, a carriage shape reading unit 51 and a carriage shape measuring mechanism 100 are provided, and a guide is provided by the carriage shape measuring mechanism 100 before the cutting plotter 1 is manufactured and shipped. By measuring the bending of the rail 31 and the Y bar 32 and correcting the machining shape data based on the measurement result, it is possible to prevent the bending of the guide rail 31 and the Y bar 32 from affecting the actual cutting. It is possible. Hereinafter, configurations of the carriage shape reading unit 51 and the carriage shape measuring mechanism 100 will be described.

  The carriage shape reading unit 51 is provided in the control unit 50 as shown in FIG. 3, reads the bending of the guide rail 31 and the Y bar 32 (hereinafter referred to as carriage shape data) by the carriage shape measuring mechanism 100, and reads the read carriage. The shape data is configured to be transmitted to the cutting shape setting unit 53. The cutting shape setting unit 53 corrects the machining shape data received from the cutting shape data reading unit 52 using the carriage shape data and creates cutting data (detailed later).

  As shown in FIGS. 4, 5, and 6, the carriage shape measuring mechanism 100 is fitted with a displacement sensor 101 that measures the bending of the guide rail 31 and the Y bar 32, and a protrusion 101 a provided on the displacement sensor 101. A sensor support member 102 having fitting holes 102a and 102b and projections (not shown) for mating, an X-direction jig 103 that can be arranged to extend in the Y-axis direction, and an X-axis direction. It is comprised with the Y direction jig | tool 104 comprised so that arrangement | positioning is possible so that it may extend. By fitting the convex portions 101a of the displacement sensor 101 into the fitting holes 102a and 102b of the sensor support member 102, the displacement sensor 101 can be fixedly supported by the sensor support member 102, and the sensor support member 102 is also supported. The displacement sensor 101 and the sensor support member 102 can be fixedly supported on the slider 41 by engaging the protrusions (not shown) of the protrusions with the engagement holes 41 a of the slider 41. Further, the displacement sensor 101 in the present embodiment is a contact-type displacement sensor 101, and when measuring an object, the displacement is measured by bringing the tip of a measuring unit 101b extending in a bar shape into contact with the object. It is possible. The displacement sensor used here is not limited to the contact type displacement sensor 101. For example, a non-contact type displacement sensor such as a dial gauge type, an eddy current type, an optical type, an air sensor or the like may be used. Good.

  As shown in FIG. 6, the X-direction jig 103 has a hole 103 a for fixing the Y-direction jig 104, and a convex portion provided at one end extending in the longitudinal direction of the Y-direction jig 104 (see FIG. 6). 4), the Y-direction jig 104 can be fixed to the X-direction jig 103 as shown in FIG. The jigs 103 and 104 have legs at both end portions extending in the longitudinal direction, and the lower surfaces of the rod-like portions extending in the longitudinal direction of the jigs 103 and 104 do not come into contact with the workpiece medium 2 and the support plate 21. ing. In addition, the tip of the measurement unit 101b of the displacement sensor 101 is in contact with a surface (side surface) orthogonal to the XY plane of the rod-shaped portion extending in the longitudinal direction of the jigs 103 and 104.

  A method for measuring the bending of the guide rail 31 and the Y bar 32 using the cutting plotter 1 and the carriage shape measuring mechanism 100 configured as described above and reflecting the measurement results in actual cutting will be described below. First, a method for measuring the bending of the Y bar 32 provided extending in the Y-axis direction and reflecting the measurement result will be described. As a preliminary preparation, as shown in FIG. 5B, the protrusion (not shown) of the sensor support member 102 is the engagement hole 41a of the slider 41, and the projection 101a of the displacement sensor 101 is the engagement hole of the sensor support member 102. The displacement sensor 101 is fitted to 102a so that the tip of the measuring unit 101b faces the positive direction of the X axis. Then, as shown in FIG. 6, the X-direction jig 103 is arranged so that the leg portion provided at one end thereof is placed on the upper surface of the placement portion 21 a, and the distal end of the measurement portion 101 b of the displacement sensor 101. Is finely adjusted so as to contact the side surface of the X-direction jig 103.

  Hereinafter, a case where the Y bar 32 as shown in FIG. 7A is bent in the X-axis negative direction by the length e1 at the left end portion and the length e2 at the right end portion will be described. First, as described above, after the power switch is turned on with the X-direction jig 103 disposed, the input unit 55 is operated to reciprocate the slider 41 in the Y-axis direction to measure the bending of the Y bar 32. Do. When the slider 41 is reciprocated in the Y-axis direction, the displacement sensor 101 fixedly supported by the slider 41 also reciprocates in the Y-axis direction. The displacement sensor 101 has a long left end portion as shown in FIG. The Y bar shape measurement result 121 in which the right end portion is bent in the negative direction of the X axis by the length e2 is output as carriage shape data. The carriage shape reading unit 51 reads the carriage shape data (Y bar shape measurement result 121) and transmits it to the cutting shape setting unit 53.

  Here, for example, in the case where the machining shape data (desired machining shape) is a straight line 122 parallel to the Y-axis direction as shown in FIG. 7B, if the machining is performed as it is, it is affected by the bending of the Y bar 32. It will be cut into a shape like the Y bar shape measurement result 121. In order to prevent such a situation, the cutting shape setting unit 53 calculates the displacement of the bend in the X-axis direction of the Y bar shape measurement result 121 with respect to the intended straight line 122, the left end portion is the length e1, and the right end portion Cutting data 123 bent in the positive direction of the X axis by the length e2. When the machining medium 2 is cut based on the cutting data 123 under the control of the drive control unit 54, the bending of the Y bar 32 is offset by the cutting data 123 and can be cut like a straight line 122. . In this way, by cutting the machining shape data (desired machining shape) and creating the cutting data 123, it becomes possible to perform cutting without being affected by the bending of the Y bar 32. In the case of a rectangle such as the region 131, cutting data 132 as shown in FIG. 7C is created and cut, and as a result, cutting can be performed as in the region 131. If the desired machining area is a right triangle such as the area 161, the cutting data 162 is created and cut, so that the cutting can be performed like the area 161 as a result.

  Next, a method for measuring the bending of the guide rail 31 provided extending in the X-axis direction and reflecting the measurement result in the cutting process will be described. First, as shown in FIGS. 5 and 8, by fitting the convex portion 101a of the displacement sensor 101 into the fitting hole 102b of the sensor support member, the distal end of the measuring portion 101b is positively aligned with the Y axis. Install so that it faces the direction. Then, the Y-direction jig 104 is fixed by fitting a convex portion (not shown) provided at one end extending in the longitudinal direction into the hole 103a of the X-direction jig 103, and provided at the other end. The leg portion is arranged so as to be placed on the placement portion 21b (see FIG. 1), and the position is finely adjusted so that the tip of the measurement portion 101b of the displacement sensor 101 contacts the side surface of the Y-direction jig 104. .

  Hereinafter, as shown in FIG. 9A, the guide rail 31 is bent at the upper end portion in the Y-axis negative direction by the length e3 and the lower end portion by the length e4 in the Y-axis positive direction. To do. First, with the Y-direction jig 104 arranged as described above, the input unit 55 is operated to reciprocate the slider 41 in the X-axis direction and measure the bending of the guide rail 31. When the slider 41 is reciprocated in the X-axis direction, the displacement sensor 101 fixedly supported by the slider 41 also reciprocates in the X-axis direction. The displacement sensor 101 has a long upper end as shown in FIG. A guide rail shape measurement result 141 having a shape in which the lower end portion is bent in the Y-axis positive direction by the length e4 by the length e3 is output as carriage shape data. The carriage shape reading unit 51 reads the carriage shape data (guide rail shape measurement result 141) and transmits it to the cutting shape setting unit 53.

  Then, similarly to the case where the bending of the Y bar 32 is measured, the cutting shape setting unit 53 calculates the displacement of the bending in the Y-axis direction of the guide rail shape measurement result 141 with respect to the straight line 142, and the upper end portion has the length e3. Cutting data 143 is created in which the lower end portion is bent in the Y-axis negative direction only by the length e4. When the machining medium 2 is cut based on the cutting data 143 under the control of the drive control unit 54, the bending of the guide rail 31 is offset by the cutting data 143 and can be cut like a straight line 142. Thus, by cutting the machining shape data (desired machining shape) and creating the cutting data 143, it becomes possible to perform cutting without being affected by the bending of the guide rail 31. For example, a desired machining area can be obtained. In the case of a rectangle such as the area 151, it is possible to cut as shown in the area 151 by creating cutting data 152 as shown in FIG. Further, when the desired processing area is a right triangle such as the area 171, the cutting data 172 is created and cut, and as a result, the cutting can be performed like the area 171.

  As described above, the displacement sensor 101 is attached to the slider 41, and the carriage shape data acquired using the jigs 103 and 104 is held in the carriage shape reading unit 51. After the carriage shape data is held, cutting is always performed. The shape setting unit 53 operates to correct the machining shape data (desired machining shape) with the carriage shape data for cutting. However, the carriage shape data can be updated as needed by using the carriage shape measuring mechanism 100 as described above. For example, when the shape of the guide rail 31 and the Y bar 32 is changed for a long time using the cutting plotter 1, the carriage shape data of the carriage shape reading unit 51 is updated again using the carriage shape measuring mechanism 100. Thus, it is possible to completely eliminate the problem that the processing quality deteriorates due to the shape change of the guide rail 31 or the Y bar 32.

  As described above, in the cutting plotter 1 according to the present embodiment, the bending of the guide rail 31 and the Y bar 32 is measured by the carriage shape measuring mechanism 100, and the machining shape data (desired machining shape) is corrected using the measurement result. By performing the cutting process based on the created cutting data, it is possible to solve the problem that the quality of the workpiece deteriorates due to the influence of the bending (straightness tolerance) of the guide rail 31 and the Y bar 32.

  In the present embodiment, an example in which the carriage shape data of the carriage shape reading unit 51 is updated using the carriage shape measuring mechanism 100 before the cutting plotter 1 is manufactured and before shipment is shown. However, the carriage shape data is updated. The timing is not limited to before the production of the cutting plotter 1 and before shipment. For example, the timing may be executed every time the power switch is turned on, or may be executed during maintenance of the cutting plotter 1.

  In the carriage shape measuring mechanism 100 according to the present embodiment, the example in which the bending of the guide rail 31 and the Y bar 32 is measured using the displacement sensor has been described. However, the displacement sensor must be used as a device for measuring the bending. However, for example, a laser side length measuring device, a straightness measuring device, or the like may be used.

  Further, the present invention is characterized in that the cutting is performed by correcting the bending of the guide rail 31 and the Y bar 32 using the carriage shape measuring mechanism 100 and the carriage shape reading unit 51. For example, the present invention can be applied to other types of cutting plotters or printer apparatuses such as a work medium drive type.

  For example, instead of the cutting plotter 1 of the type that presses the end mill 43 against the workpiece medium 2 from above (Z-axis positive direction), the machining surface of the workpiece medium 2 is transverse (parallel to the XY plane). The present invention can also be applied to a cutting plotter of the type in which the end mill 43 is pressed from the lateral direction and is cut and processed by suction.

1 Cutting plotter
2 Work medium 20 Work table (medium support means)
31 Guide rail (first guide rail)
32 Y bar (second guide rail)
41 Slider (carriage)
43 End mill (processing tool)
50 Control unit (processing control means)
101 Displacement sensor (first direction deviation detection means, second direction deviation detection means)
103 X direction jig (second direction deviation detecting means)
104 Y direction jig (first direction deviation detecting means)

Claims (3)

Medium support means having a support surface for supporting the sheet-like workpiece medium;
A first guide rail provided on the medium support means so as to extend in a first direction parallel to the support surface;
A second guide rail that is movably attached in the first direction along the first guide rail, and that extends in a second direction that is parallel to the support surface and intersects the first direction;
A carriage mounted for movement in the second direction along the second guide rail;
A processing tool attached to the carriage so as to be movable in a third direction perpendicular to the support surface, and for cutting the workpiece medium;
Control for moving the second guide rail in the first direction along the first guide rail, control for moving the carriage in the second direction along the second guide rail, and In a cutting plotter comprising a processing control means for performing control to move the carriage in the third direction and cutting the workpiece medium by the processing tool,
When the carriage is moved in the second direction along the second guide rail, the movement path of the carriage with respect to the second guide rail is in a direction perpendicular to the second direction with respect to an intended movement path. A second direction deviation detecting means for measuring a second guide rail deviation amount indicating the magnitude of deviation,
The machining control means adds movement control of the second guide rail on the first guide rail so as to correct the amount of deviation of the second guide rail in movement control of the carriage on the second guide rail. Cutting plotter characterized by performing control. When the second guide rail is moved in the first direction along the first guide rail, the movement path of the second guide rail relative to the first guide rail is the first movement path with respect to the intended movement path. A first direction deviation detecting means for measuring a first guide rail deviation amount indicating a magnitude of deviation in a direction orthogonal to the direction;
The machining control means adds movement control of the carriage on the second guide rail so as to correct the shift amount of the first guide rail in the movement control of the second guide rail on the first guide rail. The cutting plotter according to claim 1, wherein control is performed. The first and second guide rails are provided to extend on a straight line,
The first direction deviation detecting means measures the bending of the first guide rail,
The cutting plotter according to claim 1 or 2, wherein the second direction deviation detecting means measures a bending of the second guide rail.

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